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Finding the Fourth Proportional to 40,644.90, 56,090.21 and 22,739.90

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Solution

The fourth proportional to 40,644.90, 56,090.21 and 22,739.90 is: 31,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,644.90 : 56,090.21 = 22,739.90 : x
  2. Step 2: Convert to fraction form
    40,644.90/56,090.21 = 22,739.90/x
  3. Step 3: Cross multiply
    40,644.90x = 56,090.21 × 22,739.90
  4. Step 4: Simplify right side
    40,644.90x = 1,275,485,879.60
  5. Step 5: Solve for x
    x = 1,275,485,879.60/40,644.90
  6. Step 6: Final answer
    x = 31,381.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.